Cinch Gopher Trap CINCH Traps-Medium Gopher Trap One gopher trap with tunnel marking flag and instructions- Made in America Description: This one (1) trap is perfect for trapping gophers. Very durable, simple to set and highly effective gopher control. Detailed instructions included. When purchasing the right sized CINCH Traps. Easily measure the diameter of the gopher tunnel system and match this to the correct size of trap needed. The CINCH end of the trap opens to approx. 3 in diameter. This individual trap comes only with the trap, flag and instructions.